<html><head>
<meta charset="UTF-8">
<title>实例：jQuery弹性滑动导航菜单</title>
<style type="text/css">
body{ font-size:100%; font-family:"Microsoft YaHei","Arial"; background:#fff;}
#nav{ position:relative; width:832px; _width:835px; margin:100px auto 0 auto; border-bottom:2px #ddd solid;}
#nav .nav-menu{ height:50px;}
#nav .nav-menu a{ display:block; float:left; height:50px; padding:0 40px; line-height:50px; color:#666; font-size:16px; text-decoration:none;}
#nav .nav-current{ position:absolute; bottom:-2px; height:2px; overflow:hidden; background:#80b600;}
</style>
<script id="jquery_172" type="text/javascript" class="library" src="lib/jquery-1.7.2.min.js"></script>
<script type="text/javascript">
$(function(){

(function(){
var $navcur = $(".nav-current");
var $nav = $("#nav");
var current = ".current";
var itemW = $nav.find(current).innerWidth();	//默认当前位置宽度
var defLeftW = $nav.find(current).position().left;	//默认当前位置Left值

//添加默认下划线
$navcur.css({width:itemW,left:defLeftW});

//hover事件
$nav.find("a").hover(function(){
	var index = $(this).index();	//获取滑过元素索引值
	var leftW = $(this).position().left;	//获取滑过元素Left值
	var currentW = $nav.find("a").eq(index).innerWidth();	//获取滑过元素Width值
	$navcur.stop().animate({
		left: leftW,
		width: currentW
	},300);
	
},function(){
	$navcur.stop().animate({
		left: defLeftW,
		width: itemW
	},300)
})
})();

});
</script>
</head>
<body>
<div id="nav">
	<div class="nav-menu">
		<a href="#" class="current">首页</a>
		<a href="#">了解我们</a>
		<a href="#">产品展示</a>
		<a href="#">服务报价</a>
		<a href="#">最新消息</a>
		<a href="#">联系方式</a>
	</div>
	<div class="nav-current" style="width: 144px; left: 256px; overflow: hidden;"></div>
</div>


    	<style></style>
	    		<script></script>
	
<!-- Generated by RunJS (Wed Apr 03 17:24:35 CST 2013) 1ms --></body></html>